[urr2slo]

The Magnuson kit does not use the sound tube. Belt idlers bolt to the location where GM put the sound diaphragm. Magnusson doesn't completely remove the sound pipe though. They still have the section that comes out the firewall and ends at the cross brace. I would get RotoFab's sound tube delete as it takes that last piece off and looks much cleaner. Also, you use the same elbow Magnuson suppled to mate the throttle body with airbox, not the one RotoFab supplies in their kit. That's for a stock intake car. Not sure if they list a separate kit for supercharged application yet. Maybe call them on that one.